Home / 39,942.89-55,354.20-39,379.13

Finding the Fourth Proportional to 39,942.89, 55,354.20 and 39,379.13

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Solution

The fourth proportional to 39,942.89, 55,354.20 and 39,379.13 is: 54,572.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,942.89 : 55,354.20 = 39,379.13 : x
  2. Step 2: Convert to fraction form
    39,942.89/55,354.20 = 39,379.13/x
  3. Step 3: Cross multiply
    39,942.89x = 55,354.20 × 39,379.13
  4. Step 4: Simplify right side
    39,942.89x = 2,179,799,961.08
  5. Step 5: Solve for x
    x = 2,179,799,961.08/39,942.89
  6. Step 6: Final answer
    x = 54,572.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.